...Procure a well planished copper plate of the required size, and wellpolish it, first with pumice stone and water, then with snake stone,jewelers’ rouge... 
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
...This conclusion is formedfrom the vast quantity of pumice stone which is scattered in allparts of it, and mixed with the soil...
Arthur Phillip 「The Voyage Of Governor Phillip To Botany Bay」
...Proceeding up the opening, I found it to be more than a mile in width; and from thequantities of pumice stone on the borders, it was named Pumice-stone River...
Matthew Flinders 「A Voyage to Terra Australis」
ランダム例文：
infiltration ridley is
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